engstrom



]. ENGSTROM.

COMBINED ADDING MACHINE AND CHECK PROTECTOR.

APPLICATION man mma, 1916.

1 ,334343, Patented Mar. 23, 1920.

1 SHEETS-SHEET I.

l. ENGSTROM.

COMBINED ADDING MACHINE AND CHECK PROTECTOR.

urucmon FILED mus. I9l6- 1,334,743. Patented Mar. 1920.

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COMBINED ADDING MACHiNE AND CHECK PROTECTOR.

APPLlCATION FILED JAN. [3, 916.

1,334,743. Patented Mar. 23, 1920.

I SHEETS-SHEET 3.

fit torrwys I. ENGSTROM. comamzn ADDING MACHINE AND CHECK PROTECTOR.

' APPLICATION FILED MN'l3l ISIS. 1,334,743.

Patented Mar. 23, 1920.

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COMBINED ADDING MACHINE AND CHECK PROTECTOR.

APPLICATION FILED MNJS. IQIG.

Patented Mar. 23,1920.

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Wit/265666.- WZWM a I. ENGSTROM.

COMBINED ADDING MACHINE AND cnecx PROTECTOR.

APPLICATION FILED JAN-13,1916.

1,334,743. Patented Mar. 23,1920.

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l. ENGSTROM.

COMBINED ADDING MACHINE AND CHECK PROTECTOR.

APPLICAUDN HLED JAN-13,19l6- 7 SHEETS-SHEET I- UNITED STATES PATENTOFFICE.

IVAN ENGSTROM, or CHICAGO, ILLINoIs, ASSIGNOR zro HEDMAN MANUFACTURINGCOMPANY, or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

COMBINED ADDING-MACHINE AND CHECK-PROTECTOR.

Application filed January 13, 1916. Serial No. 71,831.

7 '0 all whom it mag concern Beit known t at I, Iv N ENcs'rRorI, acitizen of the United States, residing-at Chicago, in the county of Cookand State of Illinois, have invented certain newlandusefu] Improvementsin .Combined Adding Machines and Check-Protectors, .oflwhich thefollowing is a full, clear, concise, and exact description, reference beng had to the accompan 'ng drawings, forming a part of this specifidation.

My invention relates to a combined adding machine and check protectorand has for its object certain improved constructions and modesofoperation which will be more full setforth hereinafter.

T e device of myinvention consists generally of a stationary base memberto which is pivoted a housingior easing'arranged to contain the severalprinting segments for printing or cutting upon a check any desiredamount. The base; member is provided with an upwardly extending pedestalto which is pivoted an operating lever connected by means of a link tothe above mentioned casing, and arranged when operated to bring thecasing to other with the several segments against a p aten carried by astationary base. The housing carries a totalizer,

or adding attachment which is operatively connected with the severalsegments above mentioned, so that any number set up by the segments inorder to print a number upon a check may be carried upon operation 0 theoperating lever, into the'totalizer.

A. novel feature of my invention is the provision of mechanism wherebythe totalizer may be used in conjunction with the check protector sothat a total is made of the checks protected, or the check protector maybe used independently of the totalizer, so that the checks which arestam Jed are not included in the total' or are not added into thenumeral wheels, or the device may be used as an adding machine proper,that is, certain numbers may be set up by the setting keys and addedinto the tota izcr with out necessitating operation'of the checkprotecting means." Iprovide simple and quickly operated means forcausing connections and disconnections between the various parts tofacilitate the converting of the device of my invention into any one ofthese three machines.

Each of the segments which contains the Specification of Letters Patent.Patented play, 23, 1920,

printing type, carries a segmental Geneva gear which is stamped of sheetmetal.,a 1 id Geneva gears cooperate with Geneva inions which act totransmit motion from t e segmental gears to the totalizer. Since thesesegmental gears are stamped of sheet metal the cost of manufacture 1sgreatly reduced. The Genevagear segements and pinions cooperatingtherewith are arranged so thatlthe segmental ,gears are allowedto have acertam rotative movement, independent-of the pinions. The segments, oratleast some of them, are provided with indicatin numerals.

running from zero to nine, inclu mg a dol-. lar sign, which is normallyin register with the sight opening which permits the operator toascertain the position to-which the several segments have been set. Inmoving the segment from the dollarsignto the zero position, movement ofthe segment must not be imparted to the cooperating pinions and thus tothe totalizer, and I have, therefore,

provided a means whereby the segmental 'theform of a gear which isrotated when a number is carried into the totalizer. Cooperating withthis gear is a pawl, somewhat similar to an esca ement used in connection with clocks. his pawl, however, hasno time interval involved inits 0 ration. When the above mentioned gear 1s rotated the pawl iscaused to reciprocate into and out of engagement with the' several teethof the gear. When the machine'isoperated at a low speed thisreciprocating pawl operates very slowly, thus requiring very littleforce to act upon the ear to rorigidly secured j thereto. Thesesegmental late the same. When, however, t e gear is rotated at a higherrate of speed the pawl will be moved mto and out of engagement with itsteeth at a corresponding rate of speed. As the pawl is moved intoengagement with. the gear it attains a certain 1nertia which must beovercome before the awl is moved in the opposite direction. [heovercoming of this inertia consequently places a load upon itscooperating gear tending to prevent its rotation. As the velocity of thegear is doubled the force required to reciprocate the pawl is increasedby the square of the velocity; in other words, four times the force isrequired to reciprocate the governor pawl when the velocity of its co- 0eratin g g'ear is doubled. It will be seen, tierefore, that I providemeans for automatically placing upon the operating mechaanisrn a loadwhen the machine is operated above a predetermined s eed. When the speed'is increased, the 10a is increased, and when thespeed is decreased, theload is decreased, thus preventing the operator from o crating themachine too fast and probalily breaking or distortin some of its parts.These overnors di erentiate from a constantfriction drag, in that such adrag exerts upongtheoperating mechanism a load which" is the samewhether the machine is operatedat a high or low rate of speed. Thesegovernors are new, so far as I am aware, in connection with all kinds ofmachinery in which a governor or speed limiting device is to beemployed.

A: further feature of my invention is the mechanism which goes to makeupthe totalizer, the parts being arranged so that practically all ofthemcan be carried upon two supporting shafts and thus enable the device'to be placed in a very small space.

To reset the numeral wheels to zero position, when this is desired Iprovide novel mechanism whereby-this may be done in one o eration and bythe manipulation of a sing e member or unit. This device consists of are-setting lmob' which has a pin and slot connection with the numeralwheel shaft so that the knob may have a certain longitudinal'mo'vementrelatively to the shaft, spring means being employed to hold it in acertain side-wise position. This knob is provided with a stop whichnormally abuts against a sto carried by the casi of the machine, an isnormally held in this position. In re setting the numeral wheels, theknob is moved longitudinally of the shaft to disen gage the stops andthen rotated, in this instance ina clockwise direction to effectresetting of the numeral wheels. After the knob has been given a slightrotation that is enough to prevent the stops from interfering, the knobmay be moved back by its spring and the rotation of the knob continued,regardless of the longitudinal position of the knob relatively to theshaft. hen the numeral wheels have all been returned-to zero the sto sagain cooperate and retain the knob inloc ed position.

When the numeral wheels are rotated to their zero position they Ipassthrough a certain portion of the cyc e where the carryover between thenumeral wheels is effected. In order to prevent the carry-over mechanismfrom being placed in a position to operate upon the next succeedingstroke of the adding machine actuating lever, I provide means operatedby the resetting button for causing all of the carry-over mechanism tobe rendered inert temporarily, that is, until the numeral wheels havebeen reset. After the wheels have been reset the carry-over mechanism isagain placed in a condition to carry out its function.

To necessitate a complete operation of the mechanism for adding, or forstamp' a check, or for doing both, I provide a r adapted to cooperatewith a flip-over pawl which pawl permits movement of therack in but onedirection, until the rack has reached a certain predetermined position,whereafter the rack may bemoved inanopposite direction and in thisdirection only, until it reaches a second predeterminedosition where theflip over awl permits 1; e rack to again return. This pawl is in theform of two tooth arms, one of the armscoiipera'ting with the teeth ofthe rack at a time. The rack is Cpermitted to move a short distancebeyon the point where the flip-over pawl causes one tooth to disengagethe rack and the other tooth to engage, so that this additional movementprovided for the actuating lever takes care of errors or in accuraciesin manufacture.

As herein before referred to the housing or casing is pivoted to thebase and is arranged by means of an actuating lever to be moveddownwardly against the base. In order to prevent any distortion 'of themechanism due to the housing bearing upon the base with too great aforce, I have provided a positive stop for the actuating lever whichstop permits the housing or printing segments contained therein to havethe necessary engagement with the base member. but prevents the segmentsfrom being forced downwardly beyond a certain point.

. In conjunction with the speed governors which act directly upon thetotalizer I; rovide a centrifugal friction governor, w ich is o erate'ddirectly by the actuating levers of t e machine to serve also as acheckfor.

preventing too rapid operation of the machine.- The centrifugal members.are adapted to frictionally engage a hollow cylindrical member, thegreater the speed of operation of the machine, the greater clearlyreveal the construction;

enoe-is made to the accompanying drawings wherein, V Figure 1 is a side,elevational view of theg'devieeof my invention; 1

2 s avertical sectional view of Fig.

1, some ofthe :parts being broken away to- .more clearly reveal theconstruction;

Fig.3 is a front elevational view of the machine, some of the partsbeing broken away and lllu'strated In section to more Fig. .4 is. afront elevational Fig.- 6 1s a vertical .cross sectional view takenalong the lines 66 of Fig.5 looking win-the? direction indicated by thearrows;

Figr? isa cross sectional view taken alongzthe line +7015 Fig. 5'andlooking in the direction indicated by then-arrows;

.Fig.-E- 8.,is a cross-sectional view taken 'alon the line 8'8 of Fig.5. and. lookingin' the irection indicated by the arrows;..

Fig. 9 is a view similar to Fig. 8-showing the cam which'is employed inconnection with the highest numeral wheel, this figure also illustratingin dotted lines .the shapes of the cams associated with the numeralwheels disposed between the highest and lowest order numeral wheels;

Fig. 10 is a cross-sectional view of the totalizer mechanism. This viewbeing taken along the line 1010 of Fig. 4 and looking in the directionindicated by the arrows; 1% 1. a

Fig. 11- is a rear view of the mechanism illustrated in Fig. 10;

Fig. 12 is a. vertical sectional view of a portion of the upper shaft ofthe totalizer mechanism, this view being taken along the line 12.12 ofFig; 11 and looking in the direction indicated by the arrows;

Fig. 13 is another view of the mechanism illustrated in Fig. 10, theoperating parts being here shown, in positions different from thoseillustrated in Fig. 10;

Fig. 14 is a vertical cross sectional view of the upper shaft of thetotalizer mechanism, illustrating a numeral wheel and devices wherebythe numeral wheel may be reset;

Fig. 15 is a fragmentary detail view of the actuating lever for causingthe housing to move toward the stationary base, and devices connectedwith the lever for operating the totalizer when this is desired. Thisview is taken along the line 1515 'of Fig. 16;

Fig. 16 is a fragmentary cross-sectional view of the mechanismillustrated in Fig. 15, this view being taken along the line 1616 ofFig. 15 and along the line 16-16 of Fig. 1;

Fig. 17 is a cross sectional view of the view of the totahzermechanism'which mountedat' centrifugal speed govemorcooperating with theactuating levers;

Fig. 18 is a verticalcross-sectional view of the ratchet mechanism forcausing the centrifugalmeansto operateonly in one direction; a I

Fig. 19 is a perspective view of the sheet metal ;;Geneva gear segmentemployed in connectionrwith each of the printing segments;

Fig. 20isaadetail viewof the numeral wheel .of-highestorder;

Fig: 21 'sa detail cross-sectional View of a 'portion of the mechanismfor rendering-the carry-over devices ofthe totalizer temporarilyinoperative r r Fig. 221s a vertical cross-sectional: view of theIre-setting knob;

Fi .23 is .a fragmentary detail View of the rackand! zflip-over pawl fornecessitating a complete operation of themachine; and a i Fig. 24 is adetail iew of the mechanism employed-i'for ieausing acharacter to be prnted immediately adjacent to the left hand end-of a numeral or characterwhich is printcd uponthe'chck.

Similar characters of --refeience refer to similarparts throughout'theseveral views.

Referring first'to Fig. 1, 25 illustrates the stationary base and 26 themovable housing or caslng whichi's pivoted at 27 to lugs extendingupwardly from the base. The base'25 has an upwardly extending pedestal'28 *to which is pivoted at 29 an actuating lever 30 provided with ahandle portion' 31. As illustrated in Fig. 2 the housing 26 carries achannel 32 which supports a shaft 33, to which is secured one end of thelink 34-, the upper end of the link is pivotally connected at 35 to aforwardlyextend ing portion of an actuating lever 30. A second link 36is provided,which is somewhat similar to the link 34, as illustrated inF ig. 16. From the construction thus far described it will be s'een"thatupon downward movement of the lever 30 the housing 26 will be caused torotate upon its pivot 27 toward the base 25. The pedestal 28 extendsupwardly through an aperture in the housing as illustrated in Fig. 2. Toreturn the housing to its normal position after it has been moveddownwardly, I provide a pair of springs, one being illustrated in Fig. 2at 37, which has its central poition extending 'around the pivot shaft27, its lower end abutting against the base member and its upper endagainst abal' 38 connecting the side walls 39 and 40 of the casing.

Secured in the side walls 39 and 40 is a shaft 41 upon which isrotatably mounted a luralitv of printing segments illustrated at 42, 4a,214, 4.5, 46, 4.7- and 48 (Fig. 3), also provided with serrated type 51,which when moved to operative position engage a stationary platen, orplate, 52 carried by the base. Each of the printing segments is providedwith an upwardly extending handle or finger piece 53, so as to permitany one of the segments to be set. Detent mechanism 54: adapted toengage with the notches 55 is provided for each of the segments, spring56 serving to hold the detent in engagement with the printing segment.Each one of the finger pieces53- carries a Geneva. gear segment ,57,this segment being illustrated inperspective in Fig. 19. 'Each one ofthese segments cooperates with a Geneva pinion 58 rotatably mounted upona shaft 59 carriedi bysuitable supports extending from the walls of thecasing.

Each one of the Geneva gear segments 57 is formed of sheet metal andbent at an angle to form two walls 57 and 57 disposed at right angles toeach other. The wall 57 is cut away at portionsillustrated at 6060 toprovide spaces for the wide teeth of the Geneva pinion 58. The wall 57has stamped therefrom a plurality of fingers 61 which extend outwardlyparallel to the wall 57" to engage the narrow teeth of the Geneva pinion58. When the Geneva segment is in its normal position, that is, theposition illustrated in Fig. 2, one of the teeth of the pinion willextend downwardly parallel along the side of the wall 57 the twoadjacent wide teeth riding upon the periphery of the se nent. It will beseen by referring to this gure that the Geneva segment is permitted tohave a certain rotative movement independent of the Geneva pinion. Thefingers 61 and apertures 60 provided in the Geneva segments are spacedaccording to the positions of the type 51, so that each time one type isadvanced two of the fingers 61 will be advanced one step to impart tothe pinion 58 one-fifth of a revolution. In order to obtain this resultI provide a lost motion connection between the short teeth of the pinion58 and the finger 61. It will be seen, therefore, that by setting aprinting segment from its zero position to its one position the pinion58 will be given a two-tenths revolution, by moving the segment twopoints the pinion will receive a four-tenths revolution, etc.

Eachone of the Geneva pinions 58 meshes with a cam gear which isrotatably mounted upon the shaft 71, supported in the end walls 39 and40. These cam gears consist in a gear provided with twenty teeth, asillustrated in Fig. 7, and with a cam surface 7.0" which is arranged tobe engaged by a pin 72 carried by a pawl 73 pivotally mounted at 74 on adisk 75. These disks 75 are of different shapes, as will be presentlypointed. out, but the cam gears 70 are simi- 1211' throughout thetotalizer. Disposed adjacent to each of the disks 75 isanintermediate-gear 76 which meshes with a gear 77 rigidly secured to anumeral 'WhGBl. The intermediate gears 76 are all provided with tworatchet wheels 78 and 79', except the intermediate gear 76, which isassociated with the numeral wheel of lowest order. This gear is providedonlywith ratchet wheel 79; Each of the disks 75' is keyedat 80 to theshaft '71, so as to rotate therewith. Mounted upon the extreme righthand end of'the chart- T1 andfkeyed thereto is'a pinion 81 meshing witha gear segment 82 pivotally, but loosely mounted. upon the shaft 33. Thepinion 81 contains 'nlneteeth and a blank so that the segmentmay havemovement relative to it when in either extreme position. The'shaft 33has an arm 83, illustrated in dotted lines in Fig. 1'5, which ex-I tendsforwardly-alongtheside of the gear segment 82, the arm- 83 isiprovidedwiithI-an aperture 84* which arranged to register with an aperture 85",provided in the gear segment. A connectintgl'pin86is employed to extend'through bo 0f-these aipertures to connect the arm 83 and'segm ent 82when this is desired. The shaft 33 extends outwardly and has looselymounted thereon a handle 87 which carries a connector 88 pivoted at 89.This connector 88 has a bifurcated extension 90 which extends betweenenlarged portions of the pin 86, so that movement of the connector 88 ina count-er clockwisedirection (Fig. 16) causes the connecting pin 86 tomove to the left to connect the gearsegment 82 and the arm 83. The righthand end of the pin in" this figure is supported by an ear 91 whichextends upwardly from the crank 87. A spring 92 is coiled around theshaft 33 and has oneend attached to the gear segment 82, so that itnormally is held in the position illustrated. If the connecting pin 86is in the position illustrated in Fig. 16 and the crank 87 is pulledupwardly the gear segment 82 will be moved in a clockwise direction(Fig. 15). lVhen the connecting pin is in this position the lever 30 maybeoperated without in any way causing movement of the gear segment 82.If, however,the connector 88 is moved to the position illustrated indotted lines the pin 86 will serve to connect the gear segment 82and thearm 83, so that upon downwardmovement of the-lever 30 the shaft 33 willbe given a part rotation in a counterclockwise direction, (Fig. 15) thusimparting to the gear segment 82 a similar movement. Since the gearsegment 82 is adapted to mesh with the pinion 81, this pinion will berotated in a counter clockwise direction on the upward movement ofthese'gment 82 and a clockwise direction upon the downward movementthereof. The actuating lever 30 has its lower end connected by means ofa spring 93 to a post 94 carried by the pedestal 28.

Pins 72 which are carried by the pawl 73 are normally in the positionillustrated in F ig. 7, extending between the ends of the cam 70. Thepawl 73 is normally in the position illustrated in Fig. 6 ready to enagethe ratchet wheel 79. If the cam gear (0 is rotatedvby means of itsassociated type segment the cam surface 70 will be advanced ahead of thepin 72 and held there 3 until the type segment is again moved to zero.position. .If we assume that a gear-70 is advancedso that it is desiredto add four into the totalizer the end 95 of the cam surface will bemoved four steps ahead of the pin 72 when, therefore, the shaft 71 isrotated in the direction indicated by the arrow the pawl 73 will engagethe ratchet 7 9 and cause rotation of its associated intermediate gear76. As soon as the pin 72 reaches the incline 95 of the cam 7 0 theengaging end of the pawl 73 will be drawn upwardly so as to disengagethe pawl from the ratchet wheel. The pin 72 will then ride upon theouter-periphery of the cam 78 until the shaft 74 a has been given acomplete rotation,

whereupon it will be returned through the same path. As has been pointedout the intermediate gears 76 are directly connected with the numeralwheels so that upon rotation of these intermediate gears the numeralwheels are rotated and thus the numbers set up by the finger pieces 53are recorded.

The carry-over mechanism employed for causing a numeral wheel of higherorder to be advanced one step when the numeriil wheel of the next lowerorder passes through the zero point consists in the mechanismillustrated in Figs. 10 to 13 inclusive. Each of the disks 75, exceptthe one connected with the numeral wheel of lowest order is providedwith a cam groove 96 in which rides a pin 97 connected to the lower endof an arm 98 mounted upon the upper shaft 99. Each one of the arms 98carries an enlarged portion100 to which is pivoted at 101 a latch 102which normally looks a pawl 103 in the position illustrated in Fig. 10.The pawl 103 is pivoted at 104 to the arm 98 and is provided with aspring 105 acting between the pawl and the member 100 to tend to rotatethe pawl 103 in a' the ratchet 78 when the ratchet has been advanced therequired amount. The latch 102 has acting upon it a spring 108 whichtends to rotate the latch in a counter clockwise direction (Fig. 11).The latch 102 has a cam 109 extending toward its associated numeralwheel and is'arranged' to be operated upon by a pin 110 carried by thenumeral wheel.

Rotatably mounted on the member 100 is a lock 111 which has an extension112 resting against the cam 109.- This lock also carries an arm 113 towhich is pivoted at 114 trip finger 115. This finger 115 has a lug 116to which is secured a. spring 117. The spring 117 coils around a groovedmember 118 and is attached at 119 to the arm 98. The trip finger 115carries a stop 120 abut ting against a pin 121 carried in the arm 113.The spring 117 serves two purposes, one to tend to rotate the lock 111in a clockwise direction (Fig. 11), and the other to tend to rotate thetrip finger 115 in a counter clockwise direction against the pin 121.

The operation of the carry-over mecha-- by means of the gear segment 82ina direction indicated by the arrow War, the carry-over mechanism willbe moved to the position illustrated in Fig. 13. The pawl 103 will bemoved toward the ratchet 78, when the pin 97 carried by the arm 98 ridesoutwardly in the groove 96, but the tooth 106 is not moved'down farenough to cause it to engage one of the teeth of the ratchet gear. en,however, the numeral wheel 125 passes the zero point the pin 110 ismoved in the direction indicated by the arrow 5 in Fig. 10 and engagesthe cam 109 to move the latch 102 to the position illustrated in dottedlines in Fig. 13. When the latch is thus moved the pawl 103 permits thespring 105 to move it downwardly into engagement with the ratchet 78.The ratchet 78 with which it is arranged to be connected is associatedwith,. or is a. part of the intermediate gear which operates the numeralwheel of next higher order. When the pawl 103 is thus released itassumes the position illustrated in Fig. 13. As the disk 75 is rotatedin the direction indicated by the arrow a, (Fig. 10) the tooth 106 ofthe pawl is moved first to the right and then When the pin 97 againreaches the position illustrated in Fig. 10, which occurs when the shaft71 has made one complete revolution, the tooth 106 of the pawl is movedto the left until it clears the upper face of the tooth 126. whereupon,the spring 105 causes the tooth 106 to again drop and engage this tooth126. Upon the return movement of the disk 75 (that is in the directionindicated by the arrow 0 in Fig. 10) the pin 97 is moved along theportion 127 of the groove 96, whereupon the tooth 106 is moved to theright in Fig. 10. This movement of the tooth 106 imparts to the ratchet78a movement which is vone-tenth of 3, revolution. When the ratchet hasmade this step the face 107 of the pawl engages the upper face of thenext succeeding tooth of the ratchet so that the tooth 106 is positivelymoved out of the path of the ratchet. When the latch 102 was moved tothe position illustrated in dotted outline, the extension 112 of thelock 111 was permitted .todrop, due to t-hespning 117 acting upon it.This drops to a position where the extens'ion-112 h its the stop pin 128where it will be held. When the extension 112 is moved against this stoppin the beveled portion carried thereby will extend under and engage thecam 1090f the latch-102 and thus securelylo'dk the some in its upperposition away from (the pawl 103. The dropping of the arm 11 3necessarily causes the trip ifinger'115 to drop also into the path of:a. pin 129 carried by the disk 75. If when the disk 75 is moved firstin the direotion indicated by the arrow a, pin 129 engages the tripfinger l lfi, the trip finger will merely oscillate upon its pivot 114,but cause no movemeirt oftlielock 111; When, ihoweizer, the disk 75 ismoved 'backagain,

*that is, in the-direction indicated by arrow c''thepin '129 wil'lengage the straight side of the finger llo and thuslift the member 111,due to the and stop connection 120 and 121. Whenthe lock 111 is thusreturned to its original position the latch 102, is, by means 'of theextension 112 of the lodk and the cam 109 of the latch, lifted so thatwhen the extension 112 clears the cam 109 and assumes the positionillustrated in Fig. 11, the latch 102 drops downwardly to a in hold theupper end of the pawl 103.

'e several disks 75 are shaped as illustrated in Fig. 9. The diskassociated with the first numeral wheel is illustrated at 751, the onecooperating withthe second at 75- 2, with the third at 753, fourth75--4, fifth 755. and the sixth at 7 5-6. The disk 75-2 is one-te'ntlrofthe circui'nference smaller than the disk 75-1, the disk 75'3 one-tenthsmaller than the circumferenoeof the disk 7 5-2, and so on. The reasonfor this construction is that the carryover devices are caused tooperate one after the other instead of all simultaneously if eachnumeral wheel is in a carry-over condition.

Extending parallel to the shaft 71 and inimediately behind the same in ashaft 1330 upon which are mounted a number of reciprocating speedgovernor pawls 131 each arranged to have angular movement relative tothe shaft 130. Each of the pawls 131 comprises an upward arm 132 and alower arm 133. The upper arm being provided with a. tooth 134 and thelower arm with a tooth 135. Each one of the pawls 131 is disposeddirectly behind one of the interme- 'stationary and cated. in acorrespondingly faster rate of speed and this produces'a greater loadtending to prevent rotation of the gear. The

teeth of the pawl 132 are beveled, as indicated, so that engagement ofthe gear teeth with the same will cause alternate inward and outwardmovement of the pawl arms. By means of this construction I obtain simplemeans-tor automaitically placing upon the machine a load when theoperator attempts to operate the machine above a. .predetermined speed?I will now describethe mechanism I employ for resetting the numeralwheels to their zero position. Shaft 99 has a slot 136 running theentire length of the shaft. Each of the numeral wheels 125 has pivotedthereto at 137 a pawl 138 which is held in the position illustrated inFig. 14, by means of the spring 139. When the numeral wheel is rotatedby means of the totalizer mechanism the pawl 138 is moved away from thegroove 136 in a counterclockwise direction (Fig. 14), so that the groovedoes not in any way interfere with this operation; The shaft 99 isnormally I is supported by the end plates 39 and 40. The right hand endof the shaft 99 extends throughthe plate 40 and carries a pin 140 whichextends out into a slot 141 provided in a re-set knob 142 which ismounted on the end of the shaft. The knob 142 is provided with a chamber143' into which extends a compression spring 144 actin between the knoband a screw 145 carried the shaft. The knob 142 is permitted to avelongitudinal movement relative to the shaft but not angular movementbecause of the pin and slot connection 140 and 141. The spring 144normally holds the knob 142 in the osition illustrated in the drawings.The nob 142 has a stop 143 which engages a stop 144 carried by the sidewall 140. In resetting the numeral wheels the knob 142 is pulledoutwardly to disengage the stops 143 and 144 and then rotated in aclockwise direction. After the stop 143 has passed the stop 144 it is nolonger necessary for the operator to hold the knob 142 against thetension of the spring 144, but may permit the spring to act to hold theknob against the side wall 40. As the knob 142 is rotated the shaft isrotated in a counter clockwise direction, as indicated in Fig. 14. Asthis shaft is rotated the pawls 138 will fall into the groove 136 whenthe groove reaches the pawl and thus return the numeral wheels to theirzero positions.

To temporarily place the carry-over mechanism in an inoperative positionwhile the numeral wheels are being re-set I provide a disk 150 rigidlysecured to the shaft 99 and which is cut away at 151 into which cut awayportion extends the upper end of a bell crank lever 152. This lever isheld in the position illustrated in Fig. 21 by means of a spring 153which encircles the shaft 99 and which includes a spring convolution154. The lever 152 is pivoted to a rod 155. The lower end of the bellcrank lever 152 is provided with a number of arms 156 and 157, one arm156 for each of the lifter arms 113 and one arm 157 for each of thepawls 103. When the disk 150 is in the position illustrated in Fig. 21the. arms 156 and 157 are in the position illustrated in Fig. 10. When,however, the shaft 99 is rotated b means of the re-setting knob 142 thedisk 150 causes the bell crank lever 152 to swing in a counter-clockwisedirection (Figs. 10

and 21). This swinging will cause the arm 156 to slide in under the arm113, and the arm 157 to slide in under the face 107 of the pawl 103.Then the bell crank lever is moved to this position there is nopossibility of the carry-over mechanism to be set because the arms 156and 157 securely hold the pawl and lifter against downward movement.After the disk 150 has been given. a complete rotation the notch 151will again accommodate the outer end of the upper lever arm and permitthe arms 156 and 157 to move away from the carry-over mechanism. Thestop 143 will prevent rotation of the shaft 99 in one direction, and theside 158 of the notch 151 will prevent rotation of the shaft in theopposite direction. The notch 151 is beveled so that the disk can berotated in but one direction.

The numeral wheel of the highest order is operated through the numeralwheel of next lower order, by means of a disk 160 which is attached tothe numeral wheel of lower order. This disk carries one tooth which whenits numeral wheel passes the zero point meshes with at Geneva gear 161.

This Geneva gear meshes in turn with the.

gear 162 (Fig. 20) of the numeral wheel of highest order. The gear 162is frictionally connected with its numeral'whecl by means of a flatspring 163 which is riveted at 164 to the numeral wheel. This springlies in a recess, as illustrated. The free end of the spring 163contains a head 165 which is arranged to extend into any one of tenapertures 166, evenly spaced around the gear 162. This frictionalconnection between the numeral wheel and the gear causes the numeralwheel to advance one step whenever the gear is advanced. In re-setting,the reset pawl contained by this numeral wheel, which pawl is similar inall respects to the pawl illustrated in Fig. 14, the numeral wheel isrotated in unison with the re-set knob. Since the gear 162 is, however,tightly held by means of the Geneva gear 161 and the one tooth disk 160,the spring .163 will be moved into its recess to disenga e its head 165from the apertures 166 so that the numeral wheel can be re-set.

Each one of the intermediate gears 76 is provided with a sprin 170having its lower end secured to the casing and its upper end looped soas to extend between two of its teeth. The purpose of these springs areto frictionally hold the intermediate gears and thus the numeral wheelsin any position to which they may be moved. The cover 171 is providedwith sight openings 172 through which the numbers of the numeral wheelsare visible.

The gear segment 82 has an upwardly extending arm 173, to which ispivoted at 17 4:

a gear rack 175. This rack extends downwardly from the arm 173 and has astrip 176 disposed at right angles to the plane of the arm 173, whichcarries a pluralit of gear teeth 177. These gear teeth, as ilustrated inFig. 17, mesh with a pinion 178 rotatably mounted upon a shaft 179,which shaft extends through a slot 180' provided in the rack 175, thusholding the teeth 177 carried by the rack into engagement with thepinion 178. The pinion 178 is secured to, or forms part of, an internalratchet 17 8 between which, and a worm wheel 180, a dog 181 acts. Thisdog is pivoted at 182 to the worm wheel 180 and ]S by means of a spring183 normally held into engagement with the teeth of the internal ratchet178'. The worm gear 180 meshes with a worm .184 carried by shaft 185hearing at 186 and 187 in the casing or support 188. This entiregovernor mechanism is preferably made as a unit, as illustrated,

so that it can by means of screws or similar devices be easily securedto the housing 26. The lower end of the shaft 185 carries two springarms 189 and 190, the lower end of each spring arm carrying a weight191. These weights 191 are disposed within a cylinder 192 carried by thesupport 188, and are rounded on their outer surfaces as illustrated.

When the segment 82 is moved upwardly the rack 175 is moved downwardlyand the pinion 17 8 moved in a direction indicated by the arrow. Due tothe dog 181 rotation will be imparted to the worm wheel 180 which uponrotation rotates the shaft 185. The rotation of the shaft 185 will, dueto centrifugal force, force the weights 191 outwardly against the innerface of the cylinder 192. The friction between the member 191 and thecylinder 192 will depend upon the rate of speed at which the shaft 185is driven, that is, for low speeds there will be very little frictionand for high speeds a considerable amount. Upon the return stroke of therack 175 the inion 178 will be rotated in a direction reverse to thatshown by the arrow, whereupon the internal ratchet will merely ratchetpast the dog and have no effect on the worm oted at 209 to the wall 40and is notched at 210 and 211, into one of which is arranged to extend adetent arm 212 pivoted to the easing at 213. The spring 214 serves tohold the detent in the position illustrated in the drawings, that istoward the flip'over pawl. The rack 200 carries two pins 215 and 216,one disposed at each end of the series of teeth 205. Extending betweenthe pins 215 and 216 and adapted to be operated thereby is an arm 217extending from the flip-over pawl 208. The rack is cut away or beveledat 218 immediately adjacent to the pin 216 and at 219 immediatelyadjacent to the pin 215, the function of which will be presentlyexplained. When the crank 87 is moved upwardly, or to the positionillustrated in dotted lines in Fig. 23, the rack 200 is moved to theposition illustrated in dotted lines in this figure. As the teeth 205move upwardly past the flip-over pawl the tooth arm 206 will ratchetinto and out of engagement with the teeth. Any tendency to move the rack202 downwardly while the arm 206 is in engement with the teeth 205 willtend to rotate the flip-over pawl in a counter-clockwise direction (Fig.23) and thus securely' lock the rack against this downward movement.When the crank 87 reaches the position illustrated in dotted lines thepin 216 will engage the arm 217 and impart to the flip-over pawl aslight rotation to a position where the detent 212 will engage the notch210, as illustrated in dotted lines. This movement of the flip-over pawlwill cause the arm 206 to disengage the teeth of the rack and move thearm 207 into engagement therewith. It is to be noted that when theflip-over pawl is rotated by means of the pins 215 and 216 the arm whichis brought into engagement with the rack is not caused to immediatelyengage the teeth thereof. The arm, either 206 or 207, will extenddownwardly as illustrated alongside of the beveled portion 218 or 219,but will not have contact therewith. This construction successfullyprevents wearing of the engaging faces of the arms 206 and 207. Upon thedownward stroke of the crank 87 and rack, the pin 215 will upon thereturning of the rack to its normal position rotate the flipover pawlagain to the position illustrated in full lines. Since the crank 87 isconnected with the segment 82 and with-the shaft 33, when the addingoperation is to be done by means of the actuating lever 30, the crank 87will be rotated upon a downward movement of the lever 30 and thusoperate the rack flip-over pawl mechanism.

The pedestal 28 is formed into a channel, as illustrated in Fig. 15,having its front wall cut away at 225 to provide a positive stop for theactuating lever 30. The base 25 is constructed of sheet metal and isarranged to have a slight spring so that when the type segments aremoved against it, the base member may move with the segments and notform a dead stop therefor. To prevent distortion of the base ormechanism contained in the housing 26, I provide the positive stop 225which when the lever 30 is moved to its down position engages the loweredges 226 of the lever. The lever 30 has a channel cross section asillustrated in Figs. 3 and 16. The edges 226 engage the stop 225immediately after the printing segments touch the platen 52.

The Geneva gears 57 have at their forward end a strip 230 which containsnumerals corresponding with the type 51 and which are exposed through asight opening 231 provided in the front wall of the casing. This sightopening is immediately adjacent a slot 232 through which the fingerpiece 53 extends. The stationary type member 49 contains the lettersCTS, and the stationary member 50 the letters AND. Carried by the shaft41 and bya rod 41',is a support 233 upon which is slidably mounted ablock 234. This block, as illustrated in Fig. 24, carries a T shapedgroove 235 into which extends a T 236 of the support 233. The support233 has aplurality of forwardly extending plates 237, to which arepivoted at 238 four stop bell crank levers 239, 240, 241, 242. The lever239 has its upper end extending into a slot 243 provided in the segment48. The bell crank levers 40 extend into a similar slot in the segment47, the lever 241 into the segment 46, and the lever 242 into thesegment 45. The lower ends of the levers 239-242 fit between blocks 244which blocks prevent distortion of the lower ends of the levers. Carriedby the upper face of the block 234 is a pin 245 which normally clearsthe lower ends of the levers, as illustrated in Fig. 2. The support 233has secured thereto a plate 246 cut away in portion to form fourdownwardly extending spring arms 247, one, for each of the bell cranklevers. The tendency of these spring arms is to rotate the levers in acounterclockwise direction (Fig. 2). When the printing segments are in,their normal position, as illustrated, this rotation is prevented by thelower wall of the slot 243 which is engaged by the upper arms of thebell cranks. The upper arms of the bell crank levers 239 to 24-2 havedownwardly extending engaging ends that portion of its associated armwhich passes through the other segments. When, however, a printingsegment is set its corresponding bell crank will be rotated by means ofthe spring plate 246. For example, if the segment 45 is set the lowerend of the lever 242 is swung inwardly into the path of the pin 245.Rigidly secured to the base member 25 is an arm 250 which has secured atits forward end a link 251 carrying an inking pad 252. This constructionis similar in all respects to the construction illustrated and claimedin my Patent No. 1,242,162, Oct. 9, 1917, and it is not thoughtnecessary to describe this construction here. It will suflice to saythat when the casing 26 is moved downwardly the link 251 will move theinking pad away from the printing segments so as to permit the segmentsto engage the platen. The arm- 250 is slotted at 253 to be engaged by apin 254 carried by the lower end of the lever 255. This lever is pivotedat 256 to the side wall 39 and extends forwardly to connect with aspring 257, as illustrated in Fig. 24. This spring is formed into theshape of a bell crank lever and has its lower end connected with asliding block 234. The spring 257 is coiled at 258 through which, coilextends a pivot screw 259 carried by the support 233.

The operation of this mechanism is as follows:

Assuming that the segment 45 has been moved the bell crank lever 242will be swung inwardly so that its lowerend is in the path of the pin245. As the housing 26 is moved downwardly and since the arm 250 isstationary so far as the housing is concerned, the lever 255 will begiven a counter-clockwise rotation (Fig. 2). This movement of the leverwill move the upper arm of the spring 257 toward the lower arm which isconnected with the sliding block 234, thus placing a tension in thespring, tending to more the sliding block toward the printin segments.As there is nothing in the pat of the pin 245 except the lower end ofthe lever 242 the block will be moved in a direction toward the printingsegments until the pin 245 engages the lever 242. When this occurs theedge of the block is immediately adjacent the 270 whigh extend below.

moved printing segment of highest order. The block 234 contains thecharacters Pay it and thus prints this character immediately adjacentthe number of the highest significant character. It is to be noted thatthe block 234 in no way engages the printing segments, so that there isno tendency to distort or bend the segments, all of the tension of thespring 257 being taken up by one of the bell crank levers. In moving thehousing upwardly the spri 257 is a ain returned to its original positionso fiiat the sliding block is again returned to the position indicatedin Fig. 3.

Having thus described my invention, what I claim and desire to secure byLetters Patent of the United States is:

1. A combined check protector and adding machine comprising, a pluralityof movable printing members for printing the amount of each check,finger pieces for setting the members, means for actuating the printingmembers to effect the printing operation, an addin attachment connectedwith the printing members, devices for causing the adding attachment tototal the amount of the checks protected by said printing memberssimultaneously with the o eration of said actuating means, and mec anismfor operating th adding attachment to total any amount set u by thefinger pieces without actuating said printin members.

2. In a combined chec rotector and adding machine the combinatlon of abase, a housing pivotally mounted on the base, a plurality of printingmembers carried by the housing and adapted when moved against the baseto print amounts, means for setting the printing members to any desiredamount, and adding attachment arranged to be set but not actuated bysaid setting means, a lever for moving the housing and thus the printingmembers toward the base to effect" the printing operation, a crankcarried by the housing and devices for selectively causin the a dingattach ment to accumulate ti amounts'to which said means has been setwhen the said lever is actuated or when the crank is actuatedindependently of said lever.

3. In a combined check protector and adding machine, the combination ofa base, a housing pivotally mounted on the base. a plurality of prlntingmemlbcrs carried by the housing and adapted when moved against the baseto print an amount, means for setting the printin members to any desiredamount, an adcing attachment arranged to be set but not actuated by saidsetting means, mechanism for moving the housing and thus the printingmembers toward the base to effect the printing operation, a, crank, anddevices for selectively causing the adding attachment to accumulate theamount to which the said means hasbeen set when the said mechanism isactuated or when the crank is actuated independently of said mechanism.

4. In a combined check protector and; adding machine the combination of,a base, a housing pivotally mounted on the base, a plurality of printingmembers carried by the housing and adapted when moved against the baseto print an amount, means for setting the printing members to anydesired amount, an adding attachment arranged to be set but not actuatedby said setting means, a lever for moving the housing and thus theprinting members toward the base to effect the printing operation, acrank carried by the housing connected with the adding attachment andarranged when operated to total the amount set up by said means, andmeans for connecting the lever with the crank to cause operation of thecrank when the printing members are moved to printing position.

.5. In a combined check protector and adding machine the combination of,a base, a housing pivotally mounted on the base and arranged to rockthereon, a plurality of printing members carried by the housing andadapted when moved against the base to print an'amount, means forsetting the printing members to any desired amount, an adding attachmentarranged to be set but not actuated by said setting means, mechanism formoving the housing and thus the printing members toward the base toeffect the printin operation, a crank connected with the a dingattachment and arranged when operated to total the amount set up by.said means, and means for connecting the said mechanism with th crankto cause operation of the crank when the printing members are moved toprinting position.

6. A device for protecting checks and adding the amounts thereofconsisting in the combination of, a base. a housing pivoted to the baseso as to rock thereon, a support carried by the base, a manuallyoperated lever pivotally carried by the support, a shaft journaled inthe housing and connected with the lever by means of a link, theactuation of the lever serving to rock the housing and oscillate theshaft, printing members carried by the housing, means for setting theprinting members, and a totalizer, which is set but not actuated by thesaid means, operatively connected with said oscillating shaft wherebythe totalizer is caused upon the operation of the lever to add theamount set up b the setting means.

7 In a combined a ding machine and check protector the combination of, abase, a housing pivoted to the base so as to rock thereon, a supportcarried by the base, 2.

manually operated lever pivotally carried by the support, a shaftjournaled in the housing and connected with the lever by means of alink, the actuation of the lever serving to rock the housing andoscillate the shaft, printing members carried by the housing, means forsetting the printing members, a totalizer which is set but not actuatedby the said means, crank mechanism connected with adapted upon actuationto cause the totalizer to add the amount set up by the setting means,and devices for connecting the oscillating shaft with the crankmechanism.

8. A device for protecting checks and adding the amounts thereofconsisting in the combination of, a base, a housing pivoted to the baseso as to rock thereon, a support carried by the base, a manuallyoperated lever pivotally carried by the support, a shaft journaled inthe housing and connected with the lever by means of a link, theactuation of the lever serving to rock the totalizer and the housing andoscillate the shaft, printing members carried by the housing, means forsettin the printing members, a totalizer, whic is set but not actuatedby the said means operatively connected with said oscillating shaftwhereby the totalizer is caused upon operation of the lever to add theamount set up by the setting means, and means for causing completeoperation of the oscillating shaft in both directions.

9. In a combined adding machine and check protector the combination of,a base, a housing pivoted to the base so as to rock thereon, a supportcarried by the base, a manually operated lever pivotally carried by thesupport, a shaft journaled in the housing and connected with the leverby means of a link, the actuation of the lever serving to rock thehousing and oscillate the shaft, printing members carried by thehousing, means for setting the printing members, a totalizer which isset but not actuated by the said means, crank mechanism connected withthe totalizer and adapted upon actuation to cause the totalizer to addthe amount set up by the setting means, devices for connecting theoscillat ing shaft with the crank mechanism, and means connected withthe crank mechanism for causing complete operation of the mechanism inboth directions.

In witness whereof, I hereunto my name this 8th day of January, 1916.

subscribe A. D.

IVAN ENGSTROM.

Witnesses:

A, G. MCCALEB, ROBERT F. BRACKE.

